Title Difficulty Companies Videos
Reverse Words in a String 3 Easy amazon apple bloomberg microsoft paypal salesforce snapchat yahoo zappos
Rotate n x n matrix by 90 degrees Medium adobe akuna-capital amazon apple bloomberg cisco facebook google groupon houzz lyft microsoft nvidia palantir palantir-technologies quora salesforce uber wish yandex
Search in Rotated Sorted Array 2 - Check if number exists - Duplicates allowed Medium adobe amazon bloomberg facebook google microsoft
Select Copy Paste Problem 1 - Minimum operations Medium bloomberg microsoft
Serialize and Deserialize Binary Tree Hard amazon apple bloomberg citadel ebay expedia facebook google groupon indeed linkedin microsoft oracle qualtrics quora salesforce snapchat tableau uber vmware yahoo
Shortest Palindrome 1 - Prepending characters Hard adobe amazon bloomberg facebook google microsoft oracle pocket-gems
Sort Characters By Frequency Medium amazon bloomberg expedia facebook google linkedin uber
Spiral Matrix 1 - Return Medium adobe amazon apple bloomberg bytedance cisco drawbridge ebay epic-systems facebook goldman-sachs google hulu linkedin microsoft oracle paypal quip robinhood snapchat uber visa
Square root of an integer Easy amazon apple bloomberg facebook google huawei linkedin lyft microsoft qualtrics uber wayfair
Swap Nodes in Pairs Medium adobe amazon apple bloomberg ebay facebook google lyft microsoft oracle sap uber
Valid Parenthesis String Medium alibaba amazon bloomberg facebook google
Valid Sudoku Problem Medium adobe amazon apple bloomberg cruise-automation doordash facebook google microsoft oracle pinterest roblox salesforce snapchat twitter uber vmware
Validate Binary Search Tree Medium adobe amazon apple asana atlassian bloomberg bytedance capital-one ebay facebook goldman-sachs google linkedin mathworks microsoft oracle salesforce sap tripadvisor uber visa vmware yahoo yandex
Word Break 2 - Construct a sentence Hard amazon apple audible bloomberg bookingcom dropbox ebay facebook google microsoft oracle pinterest snapchat twitter uber zillow
Implement Rand10() Using Rand7() Medium apple bloomberg bytedance linkedin microsoft
Permutation in String Problem Medium amazon bloomberg facebook google lyft microsoft uber yahoo yandex
Remove All Adjacent Duplicates In String 1 Easy amazon bloomberg facebook google oracle paypal paytm
Find Duplicate Subtrees Medium amazon bloomberg facebook google lyft microsoft oracle uber
Max Area of Island Problem Medium adobe affirm amazon apple bloomberg bytedance cruise-automation doordash facebook google intuit mathworks microsoft oracle palantir-technologies qualtrics twitch uber wish zillow
Number of Provinces Medium adobe amazon atlassian bloomberg drawbridge ebay facebook goldman-sachs google linkedin microsoft pocket-gems salesforce twitter two-sigma uber
Subarray Sum Equals K Medium adobe amazon apple bloomberg ebay expedia facebook goldman-sachs google indeed linkedin microsoft oracle quora snapchat twilio uber wish yahoo yandex
Island Perimeter Problem Easy amazon apple bloomberg facebook google microsoft
All O`one Data Structure Problem Hard amazon bloomberg facebook google linkedin microsoft uber
Flatten a Multilevel Doubly Linked List Problem Medium amazon apple bloomberg facebook google microsoft uber
Valid Word Square Easy bloomberg google
Add Strings Problem Easy adobe airbnb amazon apple bloomberg bytedance facebook google microsoft nvidia oracle snapchat square
Daily Temperatures Medium adobe amazon apple bloomberg cisco expedia facebook goldman-sachs google linkedin microsoft nvidia uber zillow
Path Sum 3 - Count paths from parent to child Medium amazon bloomberg facebook microsoft oracle quora uber zillow
Maximum Subarray Sum Medium adobe alibaba amazon apple asana atlassian bloomberg bytedance capital-one cisco citadel ebay expedia facebook goldman-sachs google ibm intel jpmorgan linkedin microsoft morgan-stanley nvidia oracle palantir-technologies paypal qualcomm salesforce sap two-sigma uber visa wayfair yahoo zillow
Find the Index of the First Occurrence in a String Easy adobe amazon apple bloomberg citadel dropbox ebay facebook google microsoft oracle paypal pocket-gems vmware yahoo yandex
Hand of Straights Problem Medium bloomberg coupang ebay google
Convert Binary Search Tree to Sorted Doubly Linked List Medium amazon bloomberg databricks facebook google lyft microsoft oracle uber vmware
Sparse Matrix Multiplication Medium amazon apple bloomberg facebook google linkedin microsoft snapchat uber
Vertical Order Traversal of a Binary Tree Problem Hard adobe amazon bloomberg databricks facebook google linkedin microsoft reddit samsung
Evaluate Division Medium adobe amazon bloomberg facebook google microsoft uber
Longest Substring with At Least K Repeating Characters Problem Medium adobe amazon baidu bloomberg bytedance facebook google uber
Peak Index in a Mountain Array Medium amazon bloomberg facebook google microsoft quora uber
Lexicographical Numbers Problem Medium adobe bloomberg bytedance google
Next Greater Element 2 Medium amazon bloomberg facebook google microsoft oracle yahoo
Design Hit Counter Medium affirm amazon apple atlassian bloomberg bookingcom dropbox google indeed linkedin microsoft netflix oracle pinterest quip snapchat uber visa yahoo zillow
Managers with at Least 5 Direct Reports Problem Medium amazon bloomberg
Flatten Nested List Iterator Problem Medium airbnb amazon apple atlassian bloomberg ebay facebook google linkedin lyft microsoft oracle pinterest snapchat splunk twitter uber vmware
Intersection of Two Arrays 2 - Duplicates allowed Easy amazon apple bloomberg bytedance databricks facebook google linkedin microsoft oracle salesforce uber yandex
Intersection of Two Arrays 1 - Unique Elements Easy amazon apple bloomberg bytedance facebook google indeed jpmorgan linkedin lyft microsoft oracle two-sigma uber yelp
Design Tic-Tac-Toe Problem Medium amazon apple bloomberg doordash facebook google microsoft salesforce triplebyte uber
Longest Substring with At Most K Distinct Characters Problem Medium amazon appdynamics bloomberg citadel coupang facebook google microsoft oracle snapchat uber wish
Minimum Height Trees Medium amazon apple bloomberg facebook google snapchat
Longest Consecutive Sequence Medium adobe amazon apple bloomberg facebook google microsoft nutanix oracle paypal spotify uber wish
Second Highest Salary Problem Medium adobe amazon apple bloomberg ebay facebook google microsoft yahoo
Big Countries Problem Easy adobe bloomberg